If you just want to listen to it, select “audio_only” instead of “best”. It has lots of options, see the man for more info. For scripting, there is also a “-j” switch to produce a JSON output instead of normal text.

When is it useful? For instance you have a favourite channel that is streaming right now, but you don’t want to open it in the browser. Just launch it from the command-line and watch it in VLC. Or, if it’s a talk show, you just want to listen to it (see “audio_only”).